1. No, but you are not buying this car for the daily commute... I have a similar commute and there is no need for the V8 on a 5k commute. It is the weekends where you get to open it up, whether it is a track or just a deserted stretch of road somewhere! Does it work for daily driving? Sure, but as you know the gas mileage is not good. That was not a consideration in my purhcase.
2. See #1...
As for reliability, my car is almost two years old and has been flawless! I will note that all recent BMW's (M3 and my old 550 and 545) were/are power hogs. Nothing but 5k drives every day could result in the battery not being charged enough. A good long run over the weekend at highway speeds will take care of that.